Unisys manual EFP9800 ESC/POS Commands Transmit Peripheral Device Status, Bit

EFP9800 ESC/POS Commands

Transmit Peripheral Device Status

Transmits the status of drawer connector pin 3.

Hexadecimal		Decimal		ASCII		Value of n
1B 75 n		27 117 n		ESC u n		0, 48 = Drawer connector pin 3
Bit	Function		0		1
0	Pin Level 3		Low		High
1-3	Undefined
4	Not Used		Always 0
5-6	Undefined
7	Not Used		Always 0

Note: When the connector is not used, bit 0 = 1.

When DTR/DSR control is selected, the printer confirms that the host computer is ready to receive data (DSR signal is SPACE) and then transmits only one byte. If the host computer is not ready to receive data (DSR signal is MARK), the printer waits until the host computer is ready.

When XON/XOFF control is selected, the printer transmits only 1 byte before checking the DSR signal.

Because status is transmitted when this command is buffered, there may be a lag between command reception and status transmission, depending on the receive buffer state.

Note: When the Enable/Disable Automatic Status Back (ASB) command (1D

61)is enabled, the status transmitted by ASB and by this command must be distinguished.

The command is ignored if n is out of range.

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